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Re: Person Identifier

From: Jeremy Carroll <jjc@hpl.hp.com>
Date: Mon, 21 Apr 2008 15:21:02 +0100
Message-ID: <480CA2CE.1020203@hpl.hp.com>
To: Tim Berners-Lee <timbl@w3.org>
CC: Mark Birbeck <mark.birbeck@x-port.net>, al@jku.at, Richard Cyganiak <richard@cyganiak.de>, Bent Rasmussen <incredibleshrinkingsphere@gmail.com>, semantic-web@w3.org

Tim,

I, at least, took Mark not to be making the false logical step that you 
outlined; but more to be drawing attention to the same danger. I am 
hearing furious agreement!

(There are presumably underlying disagreements too!)

Jeremy


Tim Berners-Lee wrote:
> 
> 
> On 2008-04 -21, at 18:16, Mark Birbeck wrote:
> 
>>
>> [...] So the
>> argument being pursued (and I know it's not just your position, but
>> one that is widely held) is that we need to establish a connection to
>> the internet before we can deduce that some person is *not* a
>> web-page.
> 
> Wrong.  You have it backward.  That is not a widely held position AFAICT.
> (Or find me examples?).
> The TAG's argument (for example) is that *if* you have an HTTP 
> identifier *and* you look it up
> *then* you can deduce stuff from what you get back.
> 
> There are lots of ways of deducing something is not a web page, without 
> looking it up.
> 
>     <http://example.net/foaf#me> a foaf:Person.
> 
> is one, given also commonly shared
> 
>   awww:WebPage owl:disjointWith foaf:Person.
> 
> can allow you to deduce that without doing any HTTP accesses,
> so long as you have some reason to believe both triples.
> 
> 
>> That is so back to front as to be frightening!
> 
> Well, that's because you took the architecture
> "If  you do an HTTP access you know something"
> and attacked it as
> "If you do no HTTP access you know nothing".
> which is a false argument. You had it back to front.
> 
>>
>>> The fact, that I can figure out
>>> anything about a thing by doing a simple GET request is very very 
>>> appealing.
>>> I think it makes things really easier.
>>
>> GET requests may be simple, but how can making one be easier than
>> *not* making one?
>>
> 
> That is always your choice.
> 
> 
>> [...]
>> Regards,
>>
>> Mark
>>
>> -- 
>> Mark Birbeck
>>
>> mark.birbeck@x-port.net | +44 (0) 20 7689 9232
>> http://www.x-port.net | http://internet-apps.blogspot.com
>>
>> x-port.net Ltd. is registered in England and Wales, number 03730711
>> The registered office is at:
>>
>> 2nd Floor
>> Titchfield House
>> 69-85 Tabernacle Street
>> London
>> EC2A 4RR
> 
> 
Received on Monday, 21 April 2008 14:21:57 GMT

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